Door-opening device.



L. H. MARK.

DOOR OPENING DEVICE.

I APPLICATION FILED APR-L191]: 1 fifi fio Patentefl Nov. 2?, 191?.

2 SIIEET$--SHEET INVENTOR ATTORNEY L. H. MARK. DOOR OPENING DEVICE.

APPLICATION FILED APR. 7. I917- ]Patented Nov. 27, 1917.

2 SHEETSSHEET 2- INVENTOR l7. 7. away if ATTORNEY mas H. MARK, orTORQUAY, SASKATCHEWAN, CANADA.

DOOR-OPENING DEVICE.

Specification of Letters Patent.

Patented Nov. 2'7, 1917.

Application filed April 7, 1917. Serial No. 160,481.

To all whom it may concern:

Be it known that I, LARS I-I. MARK, a subjectof the King of GreatBritain, residing at Torquay, in the Province of Saskatchewan andDominion of Canada. have invented new and useful Improvements in Door-Opening Devices, of which the following is a specification.

This invention relates to door operating devices and it has particularreference to an improved device for opening the doors of a garage,said-device being operable by a wheel of an automobile approaching thegarage.

The invention has for its object to produce a simple and improved dooractuating device which may be installed at moderate expense and whichwill be autonntically actuated to open doors of a garage by pressure ofa wheel of an approaching automobile.

A further object of the invention is to simplify and improve theconstruction, arrangement and operation of the detailed parts of thedevice.

With these and other ends in View which will readily appear as. thenature of the invention is better understood, the same consists in theimproved construction and novel arrangement and combination of partswhich will be hereinafter fully described and particularly pointed outin the claims.

' In the accompanying drawings has been illustrated a simple andpreferred form of the invention, it being, however, understood that nolimitation is necessarily made to the precise structural details thereinexhibited, but that changes, alterations and modifications within thescope of the claims may be resorted to when desired.

In the drawings:

Figure l is a perspective view showing a portion of a garage togetherwith the doors of the same and the means for operating said doors whichconstitutes my invention.

Fig. 2 is a sectional elevation of a garage to which the invention hasbeen applied.

Fig. 3 is a plan view.

Fig. 4 is a sectional view, enlarged, taken on the line 4.t in Fig. 3.

i Fig. 5 is asectional detail View taken on the line 5-5 in Fig. 2.

Fig. 6 is a sectional detail View taken on the line 66 in Fig. 5.

Corresponding parts in the several figures of the drawings are denotedby like characters of reference.

I11 the drawings A designates the front portion of a garage having adoor frame B including side posts 0 onwhich the doors D are hinged inthe customary manner.

Mounted on each door post G near the lower end thereof is a housing 15,said housing consisting of a strong and durable casing which affords abearing for a vertical shaft 16, said shaft having at its upper end aradially extending arm 17 and at its lower end a gear wheel 18. Firmlysecured on the outer face of each door D intermediate the side edgesthereof is a plate 19 having an eye or staple 20 with which is looselyconnected one end of a short link 21, said link having at its other endan eye 22 through which one of the arms 17 extends. v

Each housing 15 is suflici'ently enlarged at its lower end to receive agear segment 23 which is mounted for rotation on a pintle 24, said gearsegment having an arm 25 that extends through a slot or opening 26 inthe side wall of-the casing. It will be understood that the arms 25 ofthe gears 23 in the respective casings extend in the direction of eachother and in the direction of the free'edges of the respective doors D.

A housing or casing 27 having a cover plate 28 is embedded in the grounda suitable distance in front of the garage and in approximate alinementwith the vertical medial line of one of the doors, the purpose of sucharrangement being to place it in alinement with one of the wheels of anapproaching automobile. The distance between the housing 27 and thegarage should be fully equal to the length of the automobile plus thedistance occupied by the doors when swung open, in order that theopening device may be actuated by one of the hind wheels of the machine.The cover plate 28 is provided with a slot 29 to accommodate a pivotedarm 30 having at its upper end a cross bar 31 constituting a pedal andcarrying at its lower end a gear segment 32 that extends through an arcof approximately ninety degrees. The segment 32 meshes with a gearsegment 33 pivoted at 34 and having an arm 35 with which the front endsof two connecting rods 36 are pivotally connected, the rearward end ofeach connecting rod being pivotally connected with the arm bar or pedal31, thereby rocking the arm 30.

25 extending from one of the gear segments 23 through the slot 26 of oneof the housings 15.

When an automobile approaches the garage it has to be properly guided sothat one of the hind wheels will engage the cross and causing thequarter segment 32 to rock the gear segment 33 a sufiicient distance totransmit motion through the rods 36 and other connections to swing thegarage doors open. The parts are so proportioned, however, that by thetime the doors are swung open the toothed segment 32 will pass out ofengagement with the gear segment 33, thus permitting the pivoted arm 30to continue its swinging movement until the cross bar or pedal rests onthe ground or on the cover plate 23. As soon as the wheel passes clearof the pedal, the segment 32 will'gravitate into engagement with thesegment 33. When the doors are swung closed, the pedal carrying arm 30will thus be automatically restored to its initial upright position. Itis now assumed that the automobile is safely housed in the garage. Whenthe automobile is taken out, the doors may be opened manually, andengagement of one of the automobile wheels with the pedal will serve toswing them shut.

It is obvious that the connecting rods 36 are to be suitably housedbeneath the surfaceof the ground and that the general construction ofthe device is to be of such a nature that the working parts will beprotected from weather influences and the like.

Having thus described the invention, what is claimed as new is:

1. In an opening device, the combinationthrough the eye of the link, andmeans for rotating the shaft about its axis to swing the door open,saidmeans including intermeshing gears one of which is fixed on the shaftand the other pivoted adjacent thereto, said last mentioned gear havinga radially extending arm, and a connecting rod having one end pivotallyconnected with said ar1n, a tiltably supported arm having a gear segmentconnected therewith at one end and a pedal bar at the other end, and asecond tiltably supported arm having an interm-eshing gear section atone end, the other end of said arm being pivotally connected with theconnecting rod.

2. In a door opening device, a hinged door having an eye or stapleconnected therewith intermediate the side edges thereof, a link rodconnected with said eye or staple and having an eye at its free end, avertical shaft supported adjacent to the hinged edge of the door andhaving a radial arm engaging the eye of the link rod, intermeshing gearsone of which is carried by the vertical shaft, a housing affording abearing for the vertical shaft and having a bottom plate on which theother intermeslr ing gear is pivoted, said last mentioned gear having anarm that extends through a side wall of the housing, and means forrocking said arm, said means including a tiltably supported arm having apedal bar at its upper end and a gear segment at its lower end, ahousing having a slotted top plate in which said arm is pivoted, asecond arm tiltably supported in the housing and having a gear segmentmeshing with a gear segment -of the first mentioned arm, and a rodconnecting the last mentioned arm with the arm of the segment projectingthrough the housing.

In testimony whereof I affix my signature.

LARS H. MARK.

